Q.Linoleic, Linolenic and -------------------- acids are referred as essential fatty acids since they cannot be synthesized by the body and hence must be included in daily diet.

Fatty acids are organic acids made of a hydrocarbon chain terminating in a carboxyl group (–COOH). A saturated fatty acid has only single bonds between the carbons of its chain (e.g. palmitic acid, stearic acid — found in almost all animal and plant fats); an unsaturated fatty acid has one or more carbon–carbon double bonds along its chain (e.g. oleic acid, found in nearly all fats, and linoleic acid, found in many seed oils), which puts a kink in the chain. Fatty acids are the basic monomer-like units from which fats, waxes, phosph …